About Ada County
Ada County is located in southwestern Idaho and is the state's most populous county and economic center. Ada County Seat is Boise, which is also Idaho's capital and largest city. Ada County was established in 1864 and named after Ada Riggs, the daughter of H.C. Riggs, one of the first settlers in the Boise area. Ada County includes approximately 1,060 square miles and is home to over 494,000 residents as of recent estimates, representing nearly a quarter of Idaho's total population. The Boise River runs through Ada County, providing recreation and irrigation.
Major landmarks include the Idaho State Capitol building, Boise Depot, Table Rock, the Boise Greenbelt, and the World Center for Birds of Prey. Ada County is bordered by Boise County to the north, Elmore County to the east and south, Canyon County to the west, and Gem County to the northwest. Ada County operates through several key agencies including Ada Clerk of the District Court located at 200 West Front Street in Boise, Ada County Clerk at the same address, and Ada County Assessor's Office also housed in Ada County Courthouse complex.
Ada County has experienced rapid growth over the past two decades, transforming from a primarily agricultural region to a technology and service economy hub. The Boise metropolitan area, largely contained within Ada County, is recognized as one of the fastest-growing regions in the United States. What makes Ada County unique is its blend of outdoor recreation access, growing urban amenities, relatively affordable cost of living compared to other western cities, and its position as Idaho's governmental and commercial center.
Sheriff, Police & Law Enforcement
Sheriff & Law Enforcement
Ada County Sheriff's Office is responsible for law enforcement services in the unincorporated areas of Ada County. This office manages Ada County Jail, processes arrests, and maintains criminal records. Notable divisions within the office include the Patrol Division, which handles emergency response and traffic enforcement, and the Investigations Division, which conducts in-depth investigations into serious crimes.
Police Departments
Law enforcement in Ada County is provided by both Ada County Sheriff's Office and several municipal police departments. The Boise Police Department serves the city of Boise, while the Meridian Police Department, Eagle Police Department, and Kuna Police Department serve their respective cities. Each department is responsible for maintaining public safety within its jurisdiction, handling local crime, and coordinating with the Sheriff's Office on major investigations.
Law Enforcement & Arrests
Ada County Sheriff's Office, led by Sheriff Matt Clifford, is the primary law enforcement agency for unincorporated areas of Ada County and operates Ada County Jail. The official website is adasheriff.org, which provides access to various public safety resources. Ada County Jail houses inmates for Ada County and contracts with other jurisdictions.
- Inmate lookup is available through the Sheriff's Office website using the Jail Roster search tool, which provides booking information, charges, bond amounts, and projected release dates.
- Some arrest information is available online through the jail roster, but detailed arrest reports typically require a formal public records request.
- Fees for copies are generally $0.10 per page for standard documents.
- Processing time varies but agencies must respond to public records requests promptly under Idaho law.
Mugshots and booking photos are typically included in the online jail roster. Within Ada County, several municipal police departments have jurisdiction in their respective cities: the Boise Police Department (the largest), Meridian Police Department, Eagle Police Department, Star Police Department, Garden City Police Department, and Kuna Police Department. Each maintains its own records division.
Arrest records in Ada County are public records under Idaho Code § 74-101 et seq, the Idaho Public Records Act. Booking photographs (mugshots) are considered public records and are accessible through the online jail roster or by records request. There are no federally recognized tribal lands in Ada County, so tribal police jurisdiction does not apply.
Criminal, Arrest & Jail Records
Criminal Records
Criminal records in Ada County cover felony, misdemeanor, traffic offenses, and the sex offender registry. Residents can request criminal records through the Sheriff's Office or the Idaho State Police Bureau of Criminal Identification, which provides statewide background checks. The Idaho State Police offers additional resources for accessing criminal history information, so that Ada County residents have access to full and up-to-date criminal records.
Arrest Records
Arrest records in Ada County are maintained by Ada County Sheriff's Office. These records include details such as the nature of the offense, date and place of arrest, and personal information of the individual arrested. Residents and attorneys can request arrest records by contacting the Sheriff's Office directly. Requests are subject to the Idaho Public Records Law, which governs the accessibility of public records in the state.
Jail & Inmate Records
Ada County Jail, officially known as Ada County Detention Center, is the primary facility for housing inmates in Ada County. The booking process at this facility includes fingerprinting, photographing, and recording personal information of the arrested individuals. Inmates can be located through an online inmate search tool provided by the Sheriff's Office. Visitation rules at the detention center require scheduling in advance, and visitors must adhere to specific guidelines regarding identification and conduct.
- The bond and bail process in Idaho allows for the release of inmates pending trial, and information on posting bail can be obtained through the jail's administrative office.
Mugshots & Booking Photos
Mugshots in Ada County are taken and retained by Ada County Sheriff's Office during the booking process at Ada County Detention Center. These booking photos are part of the public record and can be accessed through the Sheriff's Office website or by submitting a formal request. While Idaho does not have specific mugshot removal laws, individuals can petition for removal if the charges are dropped or if they are acquitted. The availability of mugshots online is subject to privacy considerations and the discretion of the Sheriff's Office.
Courts & Case Records
Ada County is served by the Fourth Judicial District Court of Idaho, which handles felony criminal cases, civil cases exceeding $10,000, domestic relations, probate, and juvenile matters. Ada County Courthouse is located at 200 West Front Street, Boise, ID 83702. The court can be contacted through the office’s website. Case information and docket searches are available through the Idaho Supreme Court's iCourt Portal at idcourts.gov, which provides free public access to case records including civil, criminal, family, probate, and traffic cases filed in Ada County.
- Ada County Magistrate Division handles misdemeanor criminal cases, infractions, small claims up to $5,000, preliminary hearings, and protection orders.
- Ada County Clerk of the Court manages court records and charges $1.00 per page for copies and $3.00 for certification.
- Remote access to documents may incur additional fees.
Users can search by party name, case number, or attorney. Several municipalities in Ada County also operate Municipal Courts for traffic violations and city ordinance violations within their city limits, including Boise City Municipal Court, Meridian Municipal Court, and Eagle Municipal Court. These courts have separate case management systems.
Access to court records is governed by Idaho Court Administrative Rule 32, which establishes that most court records are public unless specifically sealed by court order or protected by statute. Online access through iCourt is free for basic searches, though certified copies require payment. Some sensitive records such as adoption, juvenile, mental health commitments, and sealed cases are restricted from public access.
In-person record inspection is available during regular business hours at the courthouse.
Property & Public Records
Ada Clerk of the District Court's Office, located at 200 West Front Street, Boise, ID 83702, maintains all land and property records for Ada County. The Recorder can be reached at and operates the website adacounty.id.gov/recorder. The office records and preserves documents including warranty deeds, quit claim deeds, mortgages, deeds of trust, liens (mechanics liens, judgment liens, tax liens), easements, rights-of-way, plat maps, subdivision plats, and other instruments affecting real property title.
- Ada County provides a strong online property records search through Ada Clerk of the District Court's Online Search portal, accessible via Ada County website.
- For certified copies of recorded documents, the fee is $5.00 for the first page and $1.00 for each additional page, plus $5.00 for certification.
- Requests can be made in person, by mail, or online with payment.
- Ada County's online Geographic Information System (GIS) at adacounty.id.gov/gis provides detailed parcel viewer tools with aerial photography, topographic maps, zoning overlays, and flood plain data.
This free public system allows users to search recorded documents by name, document type, date range, book and page, or instrument number. Scanned images of most documents recorded since the early 1980s are available for viewing and printing at no charge. Property tax records and assessment information are maintained by Ada County Assessor's Office at 200 West Front Street, website adacountyassessor.org.
The Assessor provides a free online Property Search tool and interactive GIS mapping system that displays parcel boundaries, ownership information, assessed values, sales history, property characteristics, and tax district information. Tax payment records are available through Ada County Treasurer's Office.
Vital Records
Vital records for Ada County, Idaho are maintained by both county and state agencies. Birth and death certificates that occurred in Ada County can be requested through the Idaho Bureau of Vital Records and Health Statistics, which is the official state repository. The state vital records office is located at 450 West State Street, 1st Floor, Boise, ID 83702, phone, website healthandwelfare.idaho.gov/services-programs/vital records. Birth certificates cost $18.00 for the first certified copy and $11.00 for each additional copy ordered at the same time.
- Death certificates cost $16.00 for the first copy and $11.00 for additional copies.
- Processing time is typically 3-5 business days for in-person requests and 2-3 weeks for mail requests.
- Expedited service is available for additional fees.
- Online ordering is available through the Idaho Vital Records website or VitalChek.com with additional service fees.
- The marriage license fee is $30.00 and requires both applicants to appear in person with valid photo identification.
Applicants must provide valid photo identification and demonstrate direct and tangible interest as required by Idaho Code § 39-275. Marriage licenses are issued by Ada County Clerk's Office, located at 200 West Front Street, Boise, ID 83702 There is no waiting period or blood test required.
The license is valid for one year from issuance. Certified copies of marriage certificates cost $14.00. Divorce records (Decree of Dissolution) are maintained by Ada County Clerk of the Court as part of court case files and can be accessed through the court records system at the courthouse or via the Idaho iCourt portal.
Certified copies are available from the Clerk of Court for $1.00 per page plus $3.00 certification fee.
Business & Licensing
Business and licensing records in Ada County are available through multiple government agencies depending on the type of business activity. For formal business entity formation (corporations, LLCs, limited partnerships), records are maintained by the Idaho Secretary of State's office. The Idaho Business Entity Search is available free online at sos.idaho.gov/business-search, where users can search for registered businesses, view officers and registered agents, check filing status, and access annual reports.
- The fee for filing a certificate of assumed business name is $25.00.
DBA (Doing Business As) and assumed business names for Ada County are filed with Ada County Clerk's Office at 200 West Front Street, Boise, ID 83702 These records are public and can be searched in person at the Clerk's office. Local business licenses and operating permits for businesses located within city limits are issued by the respective municipalities.
The City of Boise requires business registration and licenses through the City Clerk's Office at Boise City Hall, 150 North Capitol Boulevard Meridian, Eagle, Kuna, Star, and Garden City each have their own business licensing requirements administered through their city clerk offices. Sales tax permits are not applicable as Idaho does not have a general sales tax, though the state does collect certain excise and use taxes.
Professional and occupational licenses (contractors, cosmetologists, healthcare professionals, etc.) are issued by state licensing boards under the Idaho Division of Occupational and Professional Licenses, accessible at ibol.idaho.gov. Building permits, development permits, and zoning information for unincorporated Ada County are handled by Ada County Development Services Department at 200 West Front Street The Boise Metro Chamber of Commerce serves Ada County and can be reached at boisechamber.org.
Elections & Voter Records
Elections in Ada County, Idaho are administered by Ada County Elections Office, led by Ada County Clerk who is the Chief Election Official. The Elections Office is located at 200 West Front Street, Boise, ID 83702, phone, with a dedicated election information line for The official website is adacountyelections.id.gov. Voter registration in Ada County can be completed online through the Idaho Secretary of State's website at idahovotes.gov, in person at the County Elections Office, at Idaho Driver's License offices, or by mail using a voter registration form.
- Idaho law requires voters to register at least 25 days before an election to be eligible to vote in that election.
- These records can be requested through Ada County Elections Office under the Idaho Public Records Act.
- In the November 2024 general election, Ada County reported approximately 61% voter turnout among registered voters, reflecting strong civic engagement.
- Absentee voting in Idaho is available to any registered voter who requests a ballot.
- Ada County voters can request an absentee ballot online through idahovotes.gov, by contacting the Elections Office by phone, or in writing.
Idaho offers same-day voter registration during the early voting period and on Election Day, but voters must provide proof of residency. Online registration is available for those with an Idaho driver's license or ID card. To find your polling place in Ada County, voters can use the polling place locator at idahovotes.gov or contact Ada County Elections Office directly.
Ada County operates numerous polling locations on Election Day, and consolidates to fewer early voting locations during the early voting period. Election records that are public in Ada County include the voter registration list (with certain personal information redacted under Idaho Code § 34-437A), campaign finance reports for local candidates filed with Ada County clerk, candidate filing documents, precinct-level election results, and ballot summary reports. The next major election is scheduled for November 3, 2026, which will include U.S.
House of Representatives races, U.S. Senate (depending on the cycle), Idaho Governor and state constitutional offices, Idaho State Legislature seats, and county offices. Absentee ballot requests must be received by 11 days before Election Day (for mail delivery) or 5 p.m.
The day before Election Day (for in-person pickup). Completed absentee ballots must be received by 8 p.m. On Election Day.
Ada County offers early in-person voting at the Elections Office and satellite locations beginning approximately two weeks before Election Day. Idaho does not conduct all-mail elections county-wide; traditional polling place voting remains the primary method. Ada County demonstrates strong election transparency by providing detailed election results by precinct on election night, maintaining publicly accessible voter history files, publishing election procedures and policies, and responding promptly to public records requests for election related documents.
Economy & Demographics
Ada County has evolved into Idaho's economic powerhouse, anchoring the Boise metropolitan area with a diverse economy that has shifted from agriculture and food processing to technology, healthcare, government services, and professional businesses. Major employers include St.
- The median household income in Ada County is approximately $69,000, higher than the Idaho state median and reflecting the concentration of professional employment.
Luke's Health System (the largest private employer with over 8,000 employees), Micron Technology (semiconductor manufacturing with approximately 6,000 local employees), Albertsons Companies corporate headquarters, Boise State University, Hewlett-Packard, Clearwater Analytics, Cradlepoint (now part of Ericsson), and numerous government agencies including state offices and the Boise VA Medical Center. Key economic sectors include technology and software development (earning Boise the nickname "Silicon Valley of the Rockies"), healthcare and medical services, financial services and insurance, education (both K-12 and higher education at Boise State University), retail trade, and food manufacturing. Agriculture remains present in eastern and rural portions of Ada County, particularly dairy farming and hay production.
Ada County unemployment rate typically runs below the national average, hovering around 2-3% in recent years. Notable economic development projects include the continued expansion of the Boise Airport, development of the West Boise Innovation District, expansion of the Columbia Village mixed-use development, and significant residential and commercial growth in Meridian, now Idaho's second-largest city. The Boise area has consistently ranked among the fastest-growing metropolitan areas in the United States, attracting migration from California, Washington, and other western states.
Downtown Boise has experienced significant redevelopment with new office towers, hotels, and residential projects. Ada County's economic growth has been driven by quality of life factors, relatively affordable housing compared to other western metros, outdoor recreation access, and business-friendly policies.
Transparency Score
Court Records: Yes: Online via iCourt | Property: Yes: Free Online Search & GIS | Arrest/Jail: Yes: Online Roster | Vital Records: Limited: State Office Required | Business: Yes: Online (State & County) | Elections: Yes: Online & Accessible | Overall Score: 9/10, Ada County provides excellent digital access to public records with online portals for most record types and responsive public records compliance.
Frequently Asked Questions
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Cities & Towns in Ada County
Explore public records for 10 cities and communities in Ada County, Idaho.